Paper drinking-cup.



R. R. RICHARDSON.

PAPER DRINKING 0UP.

APPLICATION FILED OUT. 23, 1911.

Patented Oct. 29, 1912.

ll NTTED IPATTEQT RALPH B. RICHARDSON, OF CHICAGO, ILLINCIS, ASSIGNOR 'I'Q CHICAGO fiARTON ClOMPANY, 0F CHESAGQ ILLINOIS,

A ocnrona'rrou.

Specification of Letters Patent.

Patented that. 29,

Application filed fictober 23, 1911. Serial No. 656.121.

To all whom it may concern Be it known that I, RALPH R. RICHARD- soN, a citizen of the United States. and a resident of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Paper Drinking-Cups, of which the follmving is a full, clear, and exact description.

The invention seeks to provide a sanitary drinking cup that can be cheaply constructed of a folded paper blank and which construction, while maintaining its form, requires no pasting or cemented seams.

The invention consists in the features of novelty hereinafter set forth, illustrated in the accompanying drawings and more particularly pointed out in the appended claims.

In the drawings, Figure 1 is a view of the paper blank from which the improved drinking cup is formed. Figs. 2 and 3 illustrate successive'steps in folding the blank. Fig. l is a perspective view of the completed cup as expanded or opened out for use.

The blank is a substantially square piece of heavy paper which is provided at one corner with an extension or flap a. The cup comprises two side portions 1), b, which are directly connected at their adjacent bottom edges and at the bottom edge of the cup along the central portion of a diagonal line or fold 1 that extends between two opposite corners of the blank. The opposite edges of the sides Z) liare outwardly and extend along lines or folds 2 which are inclined to the diagonal line or fold 1. These edges are connected by double flaps, the sections c of which are integral with the sides 7) and are connected together along the ends of the diagonal line or fold 1. The other corners of the blank form flaps (Z, (l' which are folded downwardly against the outer faces of the sides and over the double flaps c, 1:. These flaps are integral with the sides 7), I), and are connected thereto along the lines or folds 3 at the upper edge of the cup. The lines or folds 3 are parallel to'the diagonal line or fold 1.

The paper blank first folded along the diagonal line 1 into the form shown in Fig. 2. The double side flaps c are then folded inwardly about the line." '2 and over the body of the cap. These double side flaps are preferably folded against the outer face of one of the side portions L with one of the double flaps overlapping the other. The

I double flaps c, c are so folded that theouter corner of each double flap will extend to the opposite upper corner of the sideportion b and the upper free edges 4 thereof will to incide with the line or fold 3 at, the upper edge of the cup. The top flaps (Z, d are then folded downwardly about the lines over the outer faces of the sides 5 of the. cup and one of the flaps (2 extends over the deer ble flaps a, c. on this flap is then folded inwardly about the line 5 and is tucked or turned under the folded edge of the outer double flap (1, indicated in dotted lines in Fig. $1. The parts of the cup are thus securely held in folded position, so that it is not necessary to use glue or other fastening means for this purpose. Inasmuch as no glue or cement is required, the cup can be formed, if desired, out of heavily paraflined paper.

It should be noted that the free edges of the double flaps 0, c, which connect the opposite edges of the sides b, Z), of the cup,

are parallel with the bottom edge 1 thereof and coincide with the topedge 3 of the cup The interlocking, extension a so that the liquid contained in the cup cannot leak out over these free edges.

By employing the downturned top tiaps (Z, (Z a double or folded top edge is provided for the cup along the lines 3, so that it can not cut the lips of the user. By applying pressure to the side edges of the cup, it may be readily expanded for use, as shown in 4-. Unless the pressure isso applied, the' cup is flat and may be readily packed and shipped, either singly or in large numbers withoutinjury.

It is obvious that the details set forth may be varied without departure from the essentials of the invention as defined in the claims.

l I claim as my invention l. A flat, expansible drinking cup formed of a sul'istantially square paper blank and comprising two sides directly connected at the bottom edge of the cup along the central portion of a diagonal" fold that eX- tends between opposite corners of the blank, inwardly folded double flaps integralwit-h and cmmecting said sides, the sections of said double flaps being connected along the end portions of said diagonal fold, and av downwardly folded flap integral with one of said side portions and having an interlockmg extension turned under the folded edge aiii rlmlbie flaps, substantially bstzmii 1' 1 1W0 SILK? cnrecti commc'ted at da e ii 'i 1 1 ilii'ili s bei'eriockivg ext,

s11i3sizmiiuiiy as dwcribed.

nsib l a drinking cup formed blank and 5 5 T N v i 1 iLA'lii/XRESE GLHLACII.

a; ail square paper W0 Sides directly cfinnecteci at the boitem edge of the cup along the central. j oi'timl of diagonal fold 'that extends be- "iween opposite comers of the blank, said ides being ,mmectcd at the opposite edges 01? the cup by floubie flaps inwardly folded againsi ihe l filCt of one of said sides "Wiih m le of said double flaps overlapping the 0th the sections of said double flaps being 201mm ed aiong the end portions of said diagonal '0 dzu'uihav gtheirupperfree edges 161 to the bottom edge of the cup and an? with the upper edge thereof, and two dingnnai flaps 'niiegml with and famed dem1ward1y 02m said sides, 01m 01 said flaps nveriying said Gambia flaps and having an inierfocking exi'cnflion turned under H10 (305: edge 0' the outfl' double fizz sub shmtifaliy as describa RALPH R. RiCi'ihRDSC-N.

vviiness es i'iiARRY L. Cmmg 

